Nickel

Nickel plays a role in the metabolism of glucose, lipids, hormones, and membranes. It helps to activate some enzymes and is present in DNA and RNA. Nickel is absorbed through the intestines and stored in the kidneys, bone, and liver.

FOOD SOURCES

Pulses, nuts, cereals, whole grains and seeds, seafood, vegetables. ‘Decaf’ instant coffee and some margerines may contain traces of nickel metal. There is also environmental exposure to nickel carbonyl in cigarette smoke and exhaust from cars and oil fired systems.

SUPPLEMENTATION

Nickel supplementation should not be undertaken due to toxicity of nickel salts.

SIGNS OF DEFICIENCY

Anaemia, cirrhosis, hyperhidrosis, kidney failure, stress.

SIGNS OF TOXICITY

Nickel is toxic in large quantities, accumulating in the aorta, bones and liver. Signs of toxicity include burns, chest pain, coughing, dermatitis, headache, lung cancer, myocardial infarction, nausea, stroke, swelling, toxemia, uterine cancer, vertigo, vomiting.

DAILY REQUIREMENT

Trace (not established)